What is the cheapest place to buy Half-Life: Opposing Force?

Steam at $4.99 — an official store, and the lowest of the 1 store we compare for your region. Prices update through the day, so check the table above before buying.

Is Half-Life: Opposing Force free?

No — Half-Life: Opposing Force is a paid game. The cheapest we can find it is $4.99.

Has Half-Life: Opposing Force ever been cheaper?

Yes — the lowest we have tracked is $0.49. It is $4.99 today.

Is Half-Life: Opposing Force Steam Deck compatible?

Mostly. Valve rates Half-Life: Opposing Force Playable on Steam Deck: it runs, but may need some manual tweaking — a community controller layout, or zooming in on small text.

Can I play Half-Life: Opposing Force on Mac?

Yes. Half-Life: Opposing Force has a native macOS version on Steam.

Is Half-Life: Opposing Force on PC Game Pass?

No — Half-Life: Opposing Force is not on PC Game Pass right now. The best price to buy it right now is $4.99.

Half-Life: Opposing Force

Name: Half-Life: Opposing Force
Brand: Valve
Availability: InStock

Gearbox Software · November 1, 1999 · FPS, Action, Classic, Sci-fi, Singleplayer

Buy Half-Life: Opposing Force from Steam at $4.99 — the cheapest of 1 store we compare.

Action deals FPS deals Valve games

Overwhelmingly Positive95% · 29,07454playing now

Best price

$4.99

lowest tracked $0.49

Buy at Steam

Prices last checked 9 Oct 2026, 03:43 UTC

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Where to buy Half-Life: Opposing Force — official stores

Steam

Standard Edition · Steam

$4.99

Buy

Half-Life: Opposing Force price by region

Half-Life: Opposing Force costs $2.99 in Georgia (USD), £4.19 in the United Kingdom, €4.89 in Europe (EUR), $4.99 in the United States, CA$6.29 in Canada, A$7.05 in Australia, NZ$7.89 in New Zealand, R$17.99 in Brazil and zł20.49 in Poland right now.

Cheapest Half-Life: Opposing Force offer in each region, in local currency
Region	Best price	Official store	Key shop	Stores
Georgia (USD)	$2.99	$2.99	—	1
United Kingdom	£4.19	£4.19	—	1
Europe (EUR)	€4.89	€4.89	—	1
United Statesyour region	$4.99	$4.99	—	1
Canada	CA$6.29	CA$6.29	—	1
Australia	A$7.05	A$7.05	—	1
New Zealand	NZ$7.89	NZ$7.89	—	1
Brazil	R$17.99	R$17.99	—	1
Poland	zł20.49	zł20.49	—	1

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

About Half-Life: Opposing Force

✦ AI summary

Fight your way through the Black Mesa Research Facility as an elite soldier tasked with hunting down Gordon Freeman, encountering brutal alien enemies and wielding experimental weapons along the way. This award-winning expansion delivers a completely fresh single-player campaign that flips the script on the original game's perspective.

Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.

Half-Life: Opposing Force — game info

Platforms: Windows, macOS, Linux / SteamOS
Steam Deck: Playable
Player modes: Single-player, Multiplayer
PC Game Pass: Not included

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Half-Life: Opposing Force price history

Half-Life: Opposing Force is $4.99 at Steam right now, compared across 1 store. The lowest we have tracked is $0.49.

2026-09-26low $0.99 · now $4.99

Half-Life: Opposing Force price changes · since 26 Sep 2026
Date	Price	Store
9 Oct 2026	$4.99 ▲	Steam
1 Oct 2026	$0.99 ▼	Steam
26 Sep 2026	$4.99	—

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A live price and history chart for Half-Life: Opposing Force, updating on its own. Free to use anywhere — it carries a link back here and needs nothing else.

Half-Life: Opposing Force — questions & answers

What is the cheapest place to buy Half-Life: Opposing Force?: Steam at $4.99 — an official store, and the lowest of the 1 store we compare for your region. Prices update through the day, so check the table above before buying.
Is Half-Life: Opposing Force free?: No — Half-Life: Opposing Force is a paid game. The cheapest we can find it is $4.99.
Has Half-Life: Opposing Force ever been cheaper?: Yes — the lowest we have tracked is $0.49. It is $4.99 today.
Is Half-Life: Opposing Force Steam Deck compatible?: Mostly. Valve rates Half-Life: Opposing Force Playable on Steam Deck: it runs, but may need some manual tweaking — a community controller layout, or zooming in on small text.
Can I play Half-Life: Opposing Force on Mac?: Yes. Half-Life: Opposing Force has a native macOS version on Steam.
Is Half-Life: Opposing Force on PC Game Pass?: No — Half-Life: Opposing Force is not on PC Game Pass right now. The best price to buy it right now is $4.99.

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

Players praise Opposing Force as a strong entry in the Half-Life series with interesting weapons, creative enemy design, and a satisfying story that effectively shows the conflict from a soldier's perspective rather than the usual protagonist viewpoint. The main complaints center on difficulty balance—some find it too challenging even on easy mode—and occasional technical quirks like character collision issues, though these don't significantly detract from the overall experience for most players.

Recommended Oct 1, 2026

ww3 experience

1 found this helpful

Recommended Sep 30, 2026

good

1 found this helpful

Recommended Sep 30, 2026

No one told me this was gonna be so peak

1 found this helpful

Recommended Sep 30, 2026

in hl3 they will bring back my goat

1 found this helpful

Not recommended Oct 1, 2026

This game is insanely buggy, I just can't recommend this to anyone. Sure, you can use noclip and use workarounds, but for a casual player just wanting to play a game.. yeah no. In fact, I had to spend 40 minutes troubleshooting why I was getting softlocked continously for the first 10 minutes of gameplay. Just goes to show how buggy this game is.

Recommended Oct 1, 2026

PEAK!

Community reviews

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